Hi, I am a web developer with work experience in web agencies.
I had the opportunity to work on projects using different web technologies, principally based on the PHP scripting language.
If I have to choose the tool for an upcoming project, I would choose Joomla! due to my large experience on it, I have developed websites with Joomla! from version 1.5 up to 3.3, templates (outside of graphics), modules and components are usually developed by me. Using self developed Joomla! extensions increase my PHP programming skills and keep the project code light and easier to extend for client needs.
I have also worked with frameworks, notably Symfony 2 and FatFree.
In addition to PHP I have worked with Python while developing a personal website, using mod_python Apache module.
Server side languages aren't sufficient to build a website so of course I have experience with Javascript/jQuery development, HTML/CSS integration and Mysql/Sqlite for data storage.